What's the Point of Climate Skepticism?

The AGW (anthropogenic global warming) opponents at WUWT posted a review of an article on RealClimate this morning. The gist of the post is that the author (who by the tone of comments is well-known and well-hated) was admitting that "modeled absolute global surface temperatures" are bogus. A closer reading of the article, I think, suggests that the modelers are aware of the shortcomings of models but still believe them to be relevant and useful in some situations. And that they're trying to refine the models and trying not to use them inappropriately.

I commented on a quoted passage where the RealClimate author says “no particular absolute global temperature provides a risk to society, it is the change in temperature compared to what we’ve been used to that matters.” This seems like common sense, if a global surface temperature number is an average. It is easy to imagine that plus 5C, for example, might not be as devastating to human society in the Sahara as it would be on the Himalayan glaciers.

Responding to my comment, a "Jeff Alberts" said "Anyone who expects 'the temperature we’ve been used to' to never change, has no common sense. The question is, are changes we’re seeing due primarily, or even measurably, to human industrial activity. We simply don’t know. CO2 went up, but temps went up and down, and even remained static in many places. Therefore we have no evidence of any even minor impact due to CO2. We have no evidence as to whether today’s temps are unprecedented in any way, none."

But I wonder if that
really is the question? If mountain glacier systems at the headwaters of many of the world's most important watersheds are melting at an alarming rate, does it matter whether the cause is AGW or some natural process? Won't the billions of people depending on that water be equally effected either way? And if the natural processes of climate are as variable as AGW skeptics claim (to be the cause of all the observed changes), is there any reason to believe they'll bounce back right away and remain in a range that's comfortable for us?

If you were a nation depending on glacier-fed rivers, wouldn't it be incredibly irresponsible not to consider the possible continuing reduction of glaciers and the concurrent possible challenge to your national water supply? Would you care whether the cause was AGW or nature? Yes, you would, because if it's AGW, there may be ways to mitigate or reverse the effects - not to mention the potential liability involved. But would you wait until the jury was "in" and nobody was arguing on the cause before starting to think about what to do? I hope not!

Does all this suggest that that one of the goals of AGW skeptics is muddying the water in order to prevent action? I don't know. My free-market friend Bob recently said the skeptics are frustrated because so much money as been poured into this -- in his opinion, down a drain. He mentioned "
$165 billion so far (CBO report)." The number I was able to find for 2014 was $21.4 billion, which is definitely a lot of money. But in perspective, the total federal budget is about $3.9 trillion, so we're talking about a half a percent. And that spending is spread across dozens of government agencies including Defense (the DOD believes climate change is a strategic concern). The DOD budget is about $457 million, out of a total package of over $600 billion. So I don't think studying the climate is bankrupting America.